Vulkan: Switch ShaderInfo::load to use readBytes Right now it is using readIntVector<uint32_t>, which end up doing a for loop and memcpy each integer. This CL switch to readBytes so that one memcpy is used. Bug: b/296433003 Change-Id: Ibb10f97af4a86a4e93abb825007847a65f934237 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4790827 Commit-Queue: Charlie Lao <cclao@google.com> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Roman Lavrov <romanl@google.com>